Take-up for knitting machines



Jan. 20, 1925. I 1,523,915

' s. c. L. TISCH TAKE UP FOR KNITTING MACHINES 7 Filed Feb. 20, 1924 2Shouts-Sheet 1 O o g e g K II 6 o g 3 l or -9 .1 5 O 3 "'1RTFNT0 GeqyaLTia-h 5? C. L. TISCHZ TAKE-UR FOR KNITTING mcamss Filed Feb. 20, 19242 shun-sheet 2 Q I INVENTOR I if 14 Geqye CL. T128054 WITNESSESATTORNEYS Patented Jan. 20, 1925.

i 'itli t ili UNETED fiTATllS PATENT OFHGEi GEORGE C. L. TISCH, FELIZABETH, NEW JERSEY, ASSIGNOR TO TISCH KNITTING- MACHINE 00., 0FELIZABETH, NEW JERSEY, A CORPORATION OF NEV] JERSEY.

TAKE-UP FDR KNITTING MACHINES.

Application filed February 20, 1924. Serial No. 694,155.

To aZZ whom it may concern:

Be it known that I, GEORGE C. L. Trscn, a citizen of the United States,and a resi dent of Elizabeth, in the county of Union and State of NewJersey, have invented a new and Improved Take-Up for Knitting Machines,of which the following is a full. clear, and exact description.

This invention relates to knitting machines and particularly to animproved take-up for knitting machines of the Tisch type and has for anobject the provision of an improved gripping and lever mechanism whereinthe speed of take-up may be varied without changing the usual drivingcam.

Another object of the invention is to provide an improved grip for thetake-up mechanism of a knitting machine wherein the take-up mechanismmay be operated very slowly or at a comparatively high speed andsubstantially any desired distance within certain limits upon eachoperation.

In the accompanying drawings- Figure 1 is an end view of a Tischknitting machine with an embodiment of the invention applied thereto.

Figure 2 is an enlarged elevation of a gripping structure and associatedparts dis closing certain features of the invention.

Figure 3 is a top plan view of the structure shown in Figure 2.

Figure 1 is a fragmentary sectional view through Figure 2, approximatelyon line H.

Figure is a side elevation of the gripping band shown in Figure 2.

Figure 6 is a fragmentary view showing one end of the band actuatinglever illus trated in Figure 2.

Referring to the accompanying drawings by numerals, 1 indicates theframe of the knitting machine which is of a well known type and,therefore, will not be described in detail (see Patent No. 457,265). Theknitting machine is provided with a shaft 2 driven by suitable power andcarries a bevel gear 3 which meshes with and rotates the bevel gear 4.Connected with the bevel gear 4 is a cam 5 adapted to engage the lever 6for raising the same, said lever being pivotally mounted at 7 on part offrame 1. The lever 6 is provided with a comparatively long slot 8through which a connecting bolt 9 extends, said connecting bolt being ofany desired structure and acting to pivotally connect one end of thelink 10 of lever 6, the opposite end being pivotally connected by aconnecting bolt 11 to the strap lever 12. The bolt 11 extends throughthe slot-13 and is adjustable along the slot in a similar manner to theway the bolt 9 is adjusted along the slot 8, whereby the throw of thelever 12 may be varied by adjusting either of these bolts or both of thesame without interfering with the cam The bolts 9 and 11 act asconnecting members and also as pivotal members but do not rigidly securethe parts together.

For instance, if a greater throw of lever 12 is desired bolt 9 may bemoved outwardly on lever 6 or bolt 11 may be moved inwardly on lever 12.The lever 12 is provided with a pair of apertures 14 and 15 (Figure saidapertures registering with the apertures 16 and 17 on the gripping strap18 when the parts are assembled as shown in Figures 2 and 3. Suitablepins 19 and 20 are fitted into these apertures, said pins permitting thelever 12 to move on these pins whereby the section 21 may move upwardlyas shown in Figure 5 while the section 22 is moved downwardly. Thisaction takes place whenever the lever 12 is swung upwardly by the link10. The sections 20 and 21 merge into a substantially annular clampingband 23 which may be of any desired thickness and which normallyfrictionally engages the surface of the sleeve or drum 24 which issecured to the shaft 25 in any suitable manner, as for instance, by theset screw 26. The shaft 25 is connected with a suitable drum or othermechanism on which the knit goods is wound, whereby it may be moved inproper time to the operation of the other parts of the machine. The headof shaft 25 is journaled in the upper end of a suitable bracket 27 whichis mounted in any desired manner on part of the frame 1.

In operation, the gripping band 23 is positioned as shown in Figures 1and 2 and the other parts are arranged substantially as shown inFigure 1. As the cam 5 rotates, the lever 12 will be moved upwardly andthen downwardly again under the action of gravity upon each rotation ofthe cum 5. As the cam moves in one direction, the lever 12 is movedupwardly and the first action is to cause the band 28 to tightly gripthe drum 2% and then to partly rotate this drum. As the band 23 is moreor less frictionally engaging the entire surface of drum 24 the grippingaction thereof will be quick and positive so that usually the lever 12moves but a short distance before gripping takes place and the remainingpart of the movement is used in rotating partly shaft 25 and associatedparts. By providing this form of grip, the shaft 25 may be partiallyrotated a very short distance upon each movement of lever 12 or theparts may he set to cause a comparatively large partial rotation.

Heretotore, ratchet Wheels for driving pawls have been used and thelimitation to the take-up action. Was the size of the teeth. The ratchetWheel might be moved forward more than one tooth but could not be movedforwardly less than one tooth and, consequently, in knitting certainkinds of goods, the take-up was not proper and new ratchet Wheels wererequired having smaller or greater diameter. This adjustment and thesubstitution of new cams 5 for varying the thlOWOf the actuating leverwas more or less objectionable. In the present invention, the structuremay be quickly and easily ad justed to give anyrdesired take-up actionWithout substituting any part. In order to more readily adjust therespective levers (l and 12, suitable legends, as tor instance, numbers28, may be used on lever 12 and other. numbers 29 on lever 6, saidnumbers referring to the graduations on these levers.

What I claim is:

1. In a take-up for knitting machines, a grippingstructure, saidgripping structure I comprising a resilient gripping band divided at onepoint only, a pair of radially 6X- tending members proj *cting trom thehand adjacent the point Where .it is divided, each of said membershaving an aperture in the outer end, one of said radially extendingmembers having a right-angle oilset section, an actuating leverextending axially from said members, and. a pair oil pivotal pinsextending laterally from said lever, said pins fitting into therespective apertures in said radially extending members.

A take-up tor knitting machines, a rotatable drum, an actuating grippinghand 'urrouiuling said drum. a lever formed with alongitudinally,arranged slot operativcly connected with said hand insuch a manner that when the lever is swung in one direction it willcause the band to grip said drum and partially rotate the d rum, a link,means for pivotally connecting one end oi said linl; to said lever atdilierent points along said slot, a power lever having a longitudinallyarranged slot, means tor pivotallv connecting the opposite end ot saidlink to said power lever at any place along said slot, and a cam formoving said power lever.

In a takwnp tor knitting machines, a drum, an actuating ripping bandsurrounding said drum, s: d band being integral throughout and dividedat one point, said band at. the point of dividing having radiallyextending arun-i normally spaced apart, one of said arms at the outerend overlapping the other, each of said arms having an aperture, saidapertures being arrang d radially in alignment. and a lever extendingradially irom said arms, said. lever overlapping said arms, and a pairol' pins connected with said lever and extend ing loosely through saidapertures whereby when said lever is moved in one direction said armswill be brought tmvard each other for causing said band to grip saiddrum and partially rotate the drum and when moved in the oppositedirertion lo posit ively open said band to release said drum.

GEORGE C. ll. Tlhtfll.

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